JP4450953B2 - Rotating pivot attachment structure of a retractable roof mount antenna - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In particular, the present invention relates to a pivoting and pivoting portion structure of an in-vehicle tiltable roof mount antenna.
[0002]
[Prior art]
FIG. 4 shows an external appearance of a general in-car foldable roof mount antenna 10. In the figure, 11 is an antenna rod, 12 is an antenna base, 13 is a coaxial cable extending from the lower surface of the antenna base 12, and 14 is located at the tip of the coaxial cable 13, and is used as a tuner of an automobile on which this antenna is mounted. It is a connection plug for connection.
[0003]
As shown in the figure, the antenna rod 11 has a retractable structure that can be fixed to the antenna base 12 at any of three positions of 0 °, 60 °, and 180 °. It has a structure that gives an appropriate click feeling so that it can be securely fixed.
[0004]
FIG. 5 exemplifies a specific structure that gives a click feeling to the pivotable mounting portion of the retractable roof mount antenna 10 of FIG.
[0005]
In the figure, a cylindrical joint assembly 21 having an axial direction orthogonal to the axial direction of the antenna rod 11 is attached to the lower end side of the antenna rod 11, and the antenna base 12 is fitted to the upper portion of the antenna rod 11. Then, these are tightened and fixed together using bolts 22 and the like.
[0006]
More specifically, the joint assembly 21 has a bottomed shape with a terminal made of a metal plate on the left back side in the drawing, and this terminal abuts on and slides on a terminal portion 12b of the antenna base 12 described later. A cylindrical click case assembly in which a coil spring 23 is inserted into a circular hole from the open side of the joint assembly 21 through a washer 24, and one of the joint assemblies 21 has a bottomed shape. Incorporate 25.
[0007]
The upper portion of the antenna base 12 has a pair of bridge-like structures across the position where the antenna base 12 is fitted. On the other hand, a hexagonal columnar hole 12a is formed on the right front side in the figure, and The inner left rear side is a terminal portion 12b having a hole through which the bolt 22 penetrates.
[0008]
A click case assembly 25 in which the spring 23 and the washer 24 are inserted in a state where the joint assembly 21 of the antenna rod 11 is positioned so that the O-ring 26 enters the side abutting against the terminal portion 12b. Is inserted into the joint assembly 21 from the outside of the hexagonal columnar hole 12a, and the bolt 22 penetrating the hexagonal plate-like click plate 27 is inserted from the outside of the hexagonal columnar hole 12a of the antenna base 12, and this is penetrated. When the tip of the bolt 22 protrudes from the outer surface of the antenna base 12 on the terminal portion 12b side, the antenna rod 11 and the antenna base 12 are integrally formed by tightening and fixing with a nut 30 via a washer 28 and a spring washer 29. be able to.
[0009]
The click case assembly 25 with respect to the joint assembly 21 does not rotate at least in the circumferential direction by fitting the irregularities formed with each other.
[0010]
Similarly, the click plate 27 also moves in the axial direction within the hexagonal columnar hole 12a of the antenna base 12 due to its hexagonal plate configuration, but does not rotate in the circumferential direction.
[0011]
However, as shown in FIG. 6, a circular hole 251 for penetrating the bolt 22 is provided at the center position by press working on the outer surface of the bottom portion of the click case assembly 25 that is in contact with the click plate 27, and this circular hole 251. A plate 25a provided with a pair of hemispherical convex portions 252 and 252 that are 180 ° apart from each other is embedded.
[0012]
On the other hand, the click plate 27 to be in contact with the plate 25a of the click case assembly 25 is formed by integrally forming a hexagonal plate and a disc having a diameter inscribed in the hexagon. As shown in the drawing, the disk side that is a contact surface with the case assembly 25 is directed toward the front side in the figure, and is manufactured by, for example, a so-called machined machined aluminum thick plate. A circular hole 271 for penetrating is formed, and two pairs of grooves 272, 272, 273, and 273 that are 180 ° apart are formed on the surface on the disk side with the circular hole 271 interposed therebetween. 272, 272 and the grooves 273, 273 are arranged at positions shifted by 60 ° from each other with the circular hole 271 as the central position.
[0013]
Therefore, when the plate 25 a of the click case assembly 25 is brought into contact with the click plate 27, the antenna rod is moved from a position where the convex portions 252 and 252 on the click case assembly 25 side are displaced from the grooves 272 and 272 and the grooves 273 and 273. When one of the groove positions is reached with the rotation of 11, the unevenness is fitted and a click feeling is generated.
[0014]
In such a configuration, the contact force between the plate 25a of the click case assembly 25 and the click plate 27 by the elasticity of the coil spring 23 and the O-ring 26 according to the degree of tightening and fixing the bolt 22 with the nut 30. The contact force between the terminal portion 12b of the antenna base 12 and the metal terminal surface (not shown) of the joint assembly 21 is adjusted by adjusting the contact force. Therefore, by adjusting each contact force, the click torque and the distance between the terminals are adjusted. The degree of electrical connection is affected.
[0015]
[Problems to be solved by the invention]
In the pivotable mounting structure of the tiltable roof mount antenna 10 as described above, the hemispherical convex portions 252 and 252 formed on the plate 25a of the click case assembly 25 and the hexagonal columnar shape of the antenna base 12 are provided. A click torque corresponding to the elasticity of the spring 23 and the tightening degree of the nut 30 is generated by the fitting action with the grooves 272, 272 or 273, 273 of the click plate 27 fixed to the hole 12a.
[0016]
FIG. 7 shows the back side (not shown) of the joint assembly 21 from the state of FIG. 5, and the terminal surface 21a of the joint assembly 21 that comes into contact with the terminal portion 12b has a strong electrical connection. Thus, a plurality of, for example, three hemispherical convex portions 211, 211, 211 are formed, and the click torque also acts between the convex portions 211, 211, 211 and the terminal portion 12b of the antenna base 12. Thus, the antenna signal obtained by the antenna rod 11 is connected by frictional sliding, and is transmitted to the coaxial cable 13 by turning the antenna base 12.
[0017]
In such a structure, the portion where the click torque is generated and the portion where the antenna signal is transmitted are separated. In particular, since the click plate 27 is manufactured by cutting, the cost as a part is high. There is a problem that the manufacturing cost becomes high.
[0018]
Furthermore, as shown in FIG. 5, when assembling the click case assembly 25 into which the coil spring 23 is inserted, the irregularities formed on the outer peripheral surface thereof are fitted with the irregularities formed on the inner peripheral surface of the joint assembly 21. Until the tip protrudes outside the hexagonal columnar hole 12a so that the hexagonal plate portion of the click plate 27 is aligned with the hexagonal columnar hole 12a. There was also a problem that the assembly workability was very poor because it had to be inserted.
[0019]
The present invention has been made in view of the circumstances described above, it is an object of suppressing the increase in the manufacturing cost of the individual components, the retractable roof mounted antenna with improved assembling workability Kaidokururu It is to provide a landing part structure.
[0020]
[Means for Solving the Problems]
The invention according to claim 1 is a pivotable attachment structure of a retractable roof mount antenna having an antenna rod and an antenna base to which the antenna rod is pivotally attached, and is provided at one end of the antenna rod. It consists of a cylindrical member with a bottom in an axial direction perpendicular to the axial direction of the rod provided, and a concave or convex portion for giving a click feeling is formed on the inner surface of the bottom of the bottomed cylindrical member, and the outer surface of the bottom And a joint part formed with a terminal surface electrically connected to the antenna rod, and a joint hole that faces the upper part of the antenna base to pivotally attach the joint part. A pair of pivot portions formed with a terminal portion electrically connected to the terminal surface of the joint portion on the inner surface facing the other through-hole, and the joint portion positioned between the pivot portions. In this state, it is inserted through the bottomed cylindrical member opening of the joint part from the through hole of the pivotal support part, and is fitted to the concave or convex part of the inner surface of the bottom part of the joint part on the bottom outer surface of the bottomed cylindrical shape. A click cylinder in which convex or concave portions corresponding to a plurality of click positions are formed, and rotation in a plane orthogonal to the axial direction thereof is suppressed by engagement with the through hole of the pivot support portion, and in the click cylinder A coil spring to be inserted, a washer which is inserted into the pivot support through hole and whose rotation in a plane perpendicular to the axial direction thereof is suppressed by engagement with the through hole, and the washer, coil spring, click The coil spring and wave that are adjusted by tightening through the bottom of the cylinder, the bottom of the joint, and the antenna terminal on the other side of the pivot are screwed together via a wave washer. The contact pressure between the bottom outer surface of the click cylinder and the bottom inner surface of the joint portion and the contact pressure between the terminal portion on the bottom outer surface of the joint portion and the terminal portion on the other side inner surface of the pivot portion can be adjusted by the elasticity of the washer. A bolt and a nut are provided.
[0021]
With such a configuration , a click torque is generated between the inner surface of the bottom of the joint and the outer surface of the bottom of the click cylinder, and the friction sliding between the outer surface of the bottom of the joint and the terminal on the other side of the pivot portion. Since the electrical connection for antenna signal propagation is made by moving, the part where the click torque is generated and the part where the antenna signal is transmitted can be integrated, and all necessary metal parts must be manufactured by press working etc. Therefore, an increase in manufacturing cost of individual parts can be suppressed.
[0022]
Further, it is not necessary to adjust the fitting position of other parts while holding the coil spring in a pressed state, and then screw it with a bolt and nut, and the assembly process is shown in FIGS. Since the structure can be greatly simplified as compared with the structure, the assembling workability can be greatly improved.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
[0024]
FIG. 1 shows a concrete structure that gives a click feeling particularly to the pivoting and pivoting portion. In FIG. 1, reference numeral 31 denotes an antenna rod, 32 denotes an antenna base for mounting the antenna rod 31, and the antenna rod 31 is shown. A joint assembly 33 is provided on the lower end of the antenna base 32 and the side attached to the antenna base 32.
[0025]
The joint assembly 33 is formed of a bottomed cylindrical member in an axial direction orthogonal to the axial direction of the antenna rod 31, and is 180 ° apart from the inner surface of the bottom of the bottomed cylindrical member as shown in FIG. The pair of hemispherical convex portions 331 and 331 are formed to give a click feeling.
[0026]
The bottom outer surface of the bottomed cylindrical member serves as a terminal portion 33a for propagating an antenna signal obtained by the antenna rod 31, as shown in FIG.
[0027]
A pair of pivot portions 32a and 32b are formed so as to confront the upper portion of the antenna base 12 so as to pivotally attach the joint assembly 33. One of the pivot portions 32a and 32b is a circle having the opposite direction as an axial direction. A hole 321 is formed, and a terminal portion 322 that is in contact with and electrically connected to the terminal portion 33a of the joint assembly 33 is formed on the inner surface of the other 32b opposite to the circular hole 321.
[0028]
Thus, in the state where the joint assembly 33 is positioned between the pivot portions 32a and 32b with the O-ring 43 interposed between the terminal portion 33a of the joint assembly 33 and the terminal portion 322 of the pivot portion 32b, the pivot portion The click cylinder 34 is inserted from the circular hole 321 of 32 a through the bottomed cylindrical member opening of the joint assembly 33.
[0029]
The click cylinder 34 is formed by forming a plurality of pairs of circular holes 341, 341,... Corresponding to a plurality of click positions fitting with the convex portions 331, 331 on the bottom outer surface side of the bottomed cylindrical shape, for example. In the vicinity of the end of the outer peripheral surface on the opening side where the plate 34a is not embedded, in the circular hole 321 of the pivotal support portion 32a, a surface perpendicular to the axial direction is embedded. Concave and convex shapes that engage with the inner peripheral surface of the circular hole 321 are mutually formed to suppress the rotation.
[0030]
However, the coil spring 35 is inserted from the opening side of the click cylinder 34 through the washer 36, and, similarly to the click cylinder 34, the pivot spring 32a rotates in a plane perpendicular to the axial direction in the circular hole 321. With the washer 37 to be suppressed inserted, the washer 37, the coil spring 35, the washer 36, the bottom plate 34a of the click cylinder 34, the bottom part of the joint assembly 33, and the terminal part 322 of the pivot part 32b are passed through the bolt 38, The pivoting rotation part is configured by tightening and screwing with a nut 42 via a wave washer 39, a washer 40, and a spring washer 41 from the outer surface side of the pivotal support part 32b.
[0031]
In such a configuration, the convex portions 331 and 331 formed on the bottom inner surface of the bottomed cylindrical joint assembly 33, and the bottom plate 34a embedded in the bottom outer surface of the click cylinder 34 abutted thereon. Are generated by the elasticity of the coil spring 35 when a pair of the circular holes 341, 341,... Are engaged with each other, and the terminal portion 33a of the joint assembly 33 shown in FIG. The antenna signal obtained by the antenna rod 31 is propagated by being electrically connected to the terminal portion 322 by frictional sliding.
[0032]
In this way, the bottom surface portion of the joint assembly 33 realizes two functions, ie, generation of click torque and propagation of the antenna signal on the front and back surfaces thereof, and in particular, the bottom portion of the joint assembly 33 and the click cylinder 34 for generating a click feeling . Since both bottom plates 34a can be formed in a fitting shape by pressing or the like, the cost as individual components is low, and the manufacturing cost can be reduced as the whole antenna device.
[0033]
Further, at the time of assembling work, the bolt 38 is sequentially passed through to the spring washer 41 starting with the washer 37 as shown in FIG. 1, and the coil spring 35 is moved to the state just before the nut 42 is tightened and screwed. There is no need to hold down against the elasticity, and the number of assembling steps can be greatly reduced as compared with the conventional pivoting rotation portion shown in FIG. Can be greatly improved.
[0034]
It should be noted that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
[0035]
Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, at least one of the problems described in the column of the problem to be solved by the invention can be solved, and described in the column of the effect of the invention. In a case where at least one of the obtained effects can be obtained, a configuration in which this configuration requirement is deleted can be extracted as an invention.
[0036]
【The invention's effect】
According to the first aspect of the present invention, a click torque is generated between the inner surface of the bottom portion of the joint portion and the outer surface of the bottom portion of the click cylinder, and between the outer surface of the bottom portion of the joint portion and the terminal portion on the inner surface of the other side of the pivot portion . Since the electrical connection for antenna signal propagation is made by friction sliding, the part where the click torque is generated and the part which transmits the antenna signal can be integrated, and all necessary metal parts are manufactured by press working etc. Therefore, an increase in manufacturing cost of individual parts can be suppressed.
[0037]
In addition, it is not necessary to adjust the fitting position of other parts while holding the coil spring in the pressed state, and then screw it with bolts and nuts. Since it can be simplified, assembly workability can be greatly improved.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a specific structure of a pivotable mounting portion of a retractable roof mount antenna according to an embodiment of the invention.
2 is a perspective view illustrating a specific structure of a joint assembly and a click cylinder, in particular, in FIG. 1;
FIG. 3 is a perspective view illustrating a specific structure of the antenna base, particularly the back side of the joint assembly in FIG. 1;
FIG. 4 is a perspective view showing an external configuration of a general retractable roof mount antenna.
FIG. 5 is a perspective view illustrating a specific structure of a conventional antenna, in particular, a pivoting portion.
6 is a perspective view illustrating a specific structure of the click case assembly and the click plate in FIG. 5 in particular.
7 is a perspective view illustrating a specific structure of the antenna base, particularly, the back side of the joint assembly in FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Retractable roof mount antenna 11 ... Antenna rod 12 ... Antenna base 21 ... Joint assembly 22 ... Bolt 23 ... Coil spring 24 ... Washer 25 ... Click case assembly 25a ... Plate 251 ... Circular hole 252 ... Convex part 26 ... O-ring 27 ... click plate 271 ... circular hole 272,273 ... groove 28 ... washer 29 ... spring washer 30 ... nut 31 ... antenna rod 32 ... antenna base 32a, 32b ... pivot 321 ... circular hole 322 ... terminal part 33 ... joint assembly 33a ... Terminal part 331 ... Protruding part 34 ... Click cylinder 34a ... Bottom plate 341 ... Circular hole 35 ... Coil spring 36, 37 ... Washer 38 ... Bolt 39 ... Wave washer 40 ... Washer 41 ... Spring washer 42 ... Nut 43 ... Ring

Claims (1)

A pivotable pivot structure of a retractable roof mount antenna having an antenna rod and an antenna base for rotatably mounting the antenna rod,
A concave or convex portion for providing a click feeling to the inner surface of the bottom of the bottomed cylindrical member, comprising a bottomed cylindrical member in an axial direction orthogonal to the axial direction of the rod provided at one end of the antenna rod And a joint part that forms a terminal surface electrically connected to the antenna rod on the outer surface of the bottom part,
In order to pivotally attach the joint part, the antenna base is opposed to the upper part, a through hole whose axial direction is the opposite direction is formed in one of the joint parts, and a terminal of the joint part is formed on the inner surface facing the other through hole. A pair of pivots forming a terminal part electrically connected to the surface;
With the joint portion positioned between the pivot support portions, the joint portion bottom portion is inserted through the bottomed cylindrical member opening of the joint portion through the through-hole of the pivot support portion and the bottom portion of the bottom bottom cylindrical shape. Rotation on the surface perpendicular to the axial direction, which has convex or concave portions corresponding to a plurality of click positions to be fitted with concave or convex portions on the inner surface, is suppressed by engagement with the through hole of the pivot support portion. Click cylinder,
A coil spring inserted into the click cylinder;
A washer that is inserted into the pivot support through hole and whose rotation in a plane orthogonal to the axial direction is suppressed by engagement with the through hole;
The coil spring and wave washer adjusted by tightening the washer, the coil spring, the bottom part of the click cylinder, the bottom part of the joint part, the antenna terminal part on the other side of the pivot part and screwed through the wave washer. Due to the elasticity of, the contact pressure between the bottom outer surface of the click cylinder and the bottom inner surface of the joint portion, and the contact pressure between the terminal portion of the bottom outer surface of the joint portion and the terminal portion of the other inner surface of the pivot portion can be adjusted. A pivotable pivot structure of a retractable roof mount antenna, characterized by comprising a bolt and a nut.

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